EP0749872B1 - Airbagabdeckung und Verfahren zu deren Herstellung - Google Patents

Airbagabdeckung und Verfahren zu deren Herstellung Download PDF

Info

Publication number
EP0749872B1
EP0749872B1 EP96109990A EP96109990A EP0749872B1 EP 0749872 B1 EP0749872 B1 EP 0749872B1 EP 96109990 A EP96109990 A EP 96109990A EP 96109990 A EP96109990 A EP 96109990A EP 0749872 B1 EP0749872 B1 EP 0749872B1
Authority
EP
European Patent Office
Prior art keywords
air bag
core member
bag cover
layer
outer layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96109990A
Other languages
English (en)
French (fr)
Other versions
EP0749872A3 (de
EP0749872A2 (de
Inventor
Chiho Yamasaki
Chiharu Totani
Shigehiro Ueno
Hisao Hanabusa
Akiyoshi Nagano
Tetsuya Fujii
Katsuhiro Katagiri
Kenichi Furuta
Yoshio Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP7154884A external-priority patent/JPH092180A/ja
Priority claimed from JP7154897A external-priority patent/JPH092181A/ja
Priority claimed from JP15491195A external-priority patent/JP3304693B2/ja
Priority claimed from JP19497095A external-priority patent/JP3254973B2/ja
Priority claimed from JP20565795A external-priority patent/JP3227638B2/ja
Application filed by Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Publication of EP0749872A2 publication Critical patent/EP0749872A2/de
Publication of EP0749872A3 publication Critical patent/EP0749872A3/de
Application granted granted Critical
Publication of EP0749872B1 publication Critical patent/EP0749872B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/2165—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member characterised by a tear line for defining a deployment opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/007—Forming single grooves or ribs, e.g. tear lines, weak spots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0054—Shaping techniques involving a cutting or machining operation partially cutting through the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3008—Instrument panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3038—Air bag covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/15—Sheet, web, or layer weakened to permit separation through thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/24983—Hardness

Definitions

  • the present invention relates to an air bag cover made of synthetic resin which can be used to cover a folded air bag of an air bag device in an instrument panel, a door trim, a seat back, or a steering wheel of an automobile and manufacturing method thereof.
  • an air bag cover comprises a synthetic resin core member and a decorative sheet disposed on the front surface of the core member (see Japanese Utility Model Publication No. Sho. 63-22262 for example).
  • the conventional air bag cover includes a breakable portion which, when the air bag is expanded, can be easily broken to allow the expanding air bag to project outwardly.
  • This breakable portion is produced by forming a recessed portion in the air bag cover by means of high frequency, heat, or supersonic waves (see Japanese Patent Publications Nos. Hei. 2-248238, 4-151345, 6-218811 for example).
  • the recessed portion When the recessed portion is formed on the side of the air bag cover visible to a passenger of an automobile, the design quality of the air bag cover is lowered. For this reason, the recessed portion is conventionally formed on a back side of the air bag cover. Yet, in order to allow the air bag cover to break smoothly, the decorative sheet must also be provided with a recessed portion.
  • the decorative sheet is formed by superimposing three layers one on top of another into a united body, including an outer layer made of soft vinyl chloride or the like, a barrier layer made of polypropylene used to protect the outer layer from the heat and pressure associated with forming the core member, and a foaming layer made of foaming polypropylene, urethane or the like interposed between the outer layer and barrier layer.
  • the conventional decorative sheet provides a recessed portion not only in the barrier layer but also in the back side of the outer layer.
  • the thickness of the outer layer is small, on the order of 1 mm, and, therefore, it is difficult to control the thickness of the outer layer when the recessed portion is formed.
  • the thickness is even more difficult to control when the air bag cover is formed to have a curved surface and the breakable portion is formed in the curved surface.
  • the outer layer is made of soft vinyl chloride, the outer layer can become brittle at low temperatures, raising a fear that small fragments of the outer layer will be projected when the air bag deploys. This problem makes it necessary to strongly bond the outer layer to the foaming layer by adhesive.
  • JP 05229367 discloses a decorative sheet of a three-layer structure, having an outer layer, a foaming layer, and a cotton fabric as barrier layer, wherein a core member being bonded to the cotton fabric, and a recess is formed in the cotton fabric, and the core member, specifically a combination of a slit formed in the cotton fabric, and a groove formed in the core member.
  • the decorative sheet is set in a molding die where a resin to mold the core member is press-fitted between the cotton fabric of the decorative sheet and the die surface. During this manufacturing step, the decorative sheet, especially its cotton fabric, is integrated with the resin core material.
  • GB-A-2 276 354 which is the basis of the preamble of appended claim 1, discloses an air bag cover with an inner moulding of relatively hard plastics and an outer moulding of soft foam. The cover is cut to form a "break" line from the inside of the laminate using a laser. Also by cutting through the hard polymer into the foam, a uniform cut can be achieved, wherein ultra sonic or hot knife cutting may be used.
  • Subclaims 2 to 11 are directed towards advantageous embodiments of the inventive air bag cover.
  • Claims 12 to 20 are directed towards inventive methods of manufacturing the inventive air bag cover.
  • Subclaims 21 and 22 are directed towards two further advantageous embodiments of the inventive air bag cover.
  • an air bag cover for covering an air bag comprises: a decorative sheet having a barrier layer and an outer layer disposed on the barrier layer; and a core member made of thermoplastic resin formed by injection molding, the core member being thermally fused with the barrier layer.
  • the barrier protects the outer layer during injection molding.
  • a first recess providing a breakable portion to be broken at the expansion of the air bag is formed in the barrier layer and the core member either intermittently or continuously along the portion of the cover to be broken.
  • a second recess may be also formed in the outer layer.
  • the decorative sheet may comprise a foaming layer interposed between the outer layer and the barrier layer.
  • the second recess is defined by a curved portion having a substantially V-shaped section extended into the foaming layer.
  • a plurality of pin holes or slits can be formed so as to penetrate the outer layer and act in a similar manner as the second recess.
  • the method for manufacturing the foregoing air bag cover comprises the steps of: providing a decorative sheet having an outer layer; heating the decorative sheet; vacuum molding the heated decorative sheet into a given shape such that a second recess is formed in the outer layer; disposing a core member on the decorative sheet; and forming a first recess in the core member corresponding to the second recess in the outer layer.
  • the outer layer can be broken smoothly as the result of the breakage of the barrier layer because the barrier layer is higher in tensile strength than the outer layer.
  • the outer layer can be broken more smoothly.
  • the core member is formed by injection molding thermoplastic resin capable of thermally fusing with the barrier layer.
  • the core member can be manufactured easily without adhesive or the like. More particularly, the decorative sheet is just inserted into a set of molding dies for injection molding the core member and, after the molding dies are fastened, thermoplastic resin is charged into the cavities thereof.
  • the outer layer of the decorative sheet is protected by the barrier layer, and thus, damage to the outer layer by heat and pressure generated by the injection molding can be prevented when the core member is injection molded.
  • the air bag cover can be manufactured by simply setting the decorative sheet in the core member injection molding dies, different sized air bag covers can be manufactured easily by simply increasing the size of the injection molding dies.
  • the core member is made of thermoplastic resin the molding cycle of the present air bag cover is shorter, the present air bag cover can be manufactured more efficiently, and the need for an extra member to provide rigidity is eliminated as compared with an air bag cover which is formed of urethane or the like.
  • the touch of the air bag cover can be improved.
  • a fixed portion of the decorative sheet is formed, for example, by pressing a working blade of a supersonic welder, a high frequency welder or the like against the decorative sheet slowly from the back surface thereof.
  • the barrier layer is then heated and softened and, at the same time, the foaming layer can be depleted by the welder such that the barrier layer is reduced in thickness and is welded to the outer layer.
  • the welding operation even if the back side of the outer layer is recessed and is thereby reduced in thickness, the welding operation may be performed to such a degree that can secure the thickness of the outer layer to a specific level. Therefore, the thickness control according to the invention can be simplified remarkably over the conventional thickness control.
  • the need to control thickness can be eliminated by forming pin holes or slits in the outer layer. It is not necessary to form any recessed portion in the outer layer because of the pin holes or slits formed in the outer layer. This makes it possible to produce the breakable portion easily without carrying out any controlling operation on the thickness of the outer layer.
  • An air bag cover 10 is formed as a part of an instrument panel 8 of a car.
  • the instrument panel 8 comprises a main body 9 and the air bag cover 10.
  • the main body 9 includes a base member 9a made of hard synthetic resin, such as polypropylene containing filler, and a main body decorative sheet 9b.
  • the main body decorative sheet 9b is preferably formed by extending a decorative sheet 12, which covers the air bag cover 10, (discussed below) disposed on the base member 9a.
  • the air bag cover 10 is disposed in the instrument panel 8 so that it covers the upper portion of the folded air bag 2 of the air bag device 1, and it includes a core member 11 and the decorative sheet 12 disposed on the surface side of the core member 11.
  • the base member 9a of the main body 9 is made of hard synthetic resin which have larger hardness than that of the core member 11.
  • the air bag device 1 includes a bag-shaped air bag 2 which can be folded and stored, a cylinder-type inflator 3 which is used to expand the air bag 2, a cylindrical diffuser 4 which diffuses the gas from the inflator 3 and allows the gas to flow into the air bag 2, and a case 5 which covers the peripheries of the air bag 2, inflator 3 and diffuser 4.
  • Reference character 4a designates a gas flow hole for diffusing the gas from the inflator 3, while 4b designates a plurality of bolts which are provided on and projected from the diffuser 4.
  • the bolts 4b can connect the case 5, air bag 2 and diffuser 4 together into a united body and also can mount and fix the air bag device 1 to a bracket 7 which is provided on and projected from a frame of a car.
  • the case 5 includes a side wall portion which is formed as a double structure including an inner panel 5a and an outer panel 5b.
  • the outer panel 5b there are a predetermined number of claws 5c which are formed by raising up the corresponding portions of the outer panel 5b and extending them toward the inner panel 5a. These claws 5c are used to secure a bracket 11a which will be described later.
  • the air bag cover 10 includes a breakable portion 16 having an H-shape as viewed from above.
  • a breakable portion 16 having an H-shape as viewed from above.
  • door portions 17 and 18 pivot open due to breakage of the breakable portion 16.
  • the portions of the air bag cover 10 existing between the upper and lower portions of the H-shape of the breakable portion 16 provide hinge portions 19 which are used as the centers of rotation of the door portions 17 and 18.
  • the core member 11 is made of thermoplastic elastomer compatible with the base member 9a, that is, capable of thermally fusing with the base member 9a. This compatibility assures that the hinge portions 19 are not broken but rather bend during air bag deployment. It also allows the core member 11 to be connected to the base member 9a.
  • the base member 9a is made of polypropylene containing filler.
  • the suitable materials for the core member 11 include olefin thermoplastic elastomer and styrene thermoplastic elastomer.
  • the core member 11 is made of olefin thermoplastic elastomer.
  • the core member 11 includes a bracket 11a having a square cylindrical shape such that it is projected from the back side of an outer peripheral edge of the core member 11.
  • a bracket 11a having a square cylindrical shape such that it is projected from the back side of an outer peripheral edge of the core member 11.
  • the bracket 11a there are formed a predetermined number of mounting holes lib in which the claws 5c of the case 5 of the air bag device 1 can be inserted and secured.
  • the bracket 11a assures that the breakable portion 16 and door portions 17, 18 are accurately located above the folded air bag 2.
  • the decorative sheet 12 includes an outer layer 13, a barrier layer 15 which is disposed as the inner most layer of the decorative sheet 12, and a foaming layer 14 interposed between the outer layer 13 and barrier layer 15.
  • the barrier layer 15 protects the outer layer 13 and the foaming layer 14 from heat and pressure when the core member 11 is molded.
  • the outer layer 13 and barrier layer 15 are made of the same olefin thermoplastic elastomer as the core member 11, and the foaming layer 14 is made of foaming polypropylene.
  • the respective thicknesses of the outer layer 13, barrier layer 15 and foaming layer 14 are 0.5 mm, 0.7 mm and 3.0 mm respectively.
  • a recessed portion 16a is formed in the core member 11 and a cut portion 16b is formed in the barrier layer 15 such that the core member 11 and the barrier layer 15 define a first recess.
  • the first recess extends into the foaming layer.
  • a thin portion 16e of the V-shaped second recess is formed by extending the outer layer 13 by force from the surface side thereof to the back side thereof.
  • the curved portion 16d providing the second recess in the outer layer 13 is formed so as to extend continuously along the H-shape of the breakable portion 16, while the recessed portions 16a and 16c may be formed continuously or intermittently along the H-shape of the breakable portion 16.
  • the thickness of the thin portion 16e which has the smallest thickness in the curved portion 16d, is 0.3 mm.
  • the decorative sheet 12 including the main body decorative sheet 9b is first heated and softened by a heating device 20 and, thereafter, as shown in Fig. 4 (b), the softened decorative sheet 12 is pressed against a vacuum mold 21 and is thereby vacuum molded into a given shape such as the instrument panel 8.
  • the outer layer 13 is pushed and extended by a projection 21b provided on the mold surface 21a of the vacuum mold 21 so that the curved portion 16d including the thin portion 16e serving as the breakable portion can be formed in the outer layer 13.
  • the thin portion 16e is extended into the foaming layer 14.
  • the decorative sheets 12 and 9b which have been formed into a given shape as a whole, are disposed in a mold for injection molding the base member 9a of the main body 9.
  • This assembly is set in a mold for injection molding the core member 11 of the air bag cover 10 and, as shown in Fig. 4 (c), the core member 11 is then injection molded onto the decorative sheet 12.
  • the recessed portions 16a and 16c are formed by a working hone 22 of a supersonic welder.
  • a mounting hole 11b is formed in the core member 11.
  • the curved portion 16d defining the substantially V-shaped recess and the thin portion 16e are provided in the breakable portion 16 of the outer layer 13.
  • the decorative sheet 12 including the outer layer 13 has been already heated and softened.
  • the outer layer 13 can be pushed and extended from the surface side thereof to the back side thereof so that the curved portion 16d can be formed in the outer layer. Due to the fact that the curved portion 16d is formed by pushing and extending the outer layer 13, the thin portion 16e can be easily produced in the central portion of the curved portion 16d even when the outer layer 13 is thin.
  • the thin portion 16e can be formed in a curved section of the air bag cover 10 by the foregoing method.
  • any difference in the luster or die portion of the portion 16d are hard to see from the surface side of the air bag cover 10, which prevents the outer appearance of the air bag cover 10 from being impaired.
  • portions of the barrier layer 15 corresponding to the base member 9a, core member 11, and decorative sheets 9b and 12 are made of the same or compatible materials as the core member 11, they can be strongly connected to each other even if adhesives are not used.
  • the recessed portion 16a, 16c may also be formed by a heated cutter or a high frequency cutter.
  • the bracket 11a is inserted between the inner panel 5a and outer panel 5b of the case 5 of the air bag device 1 and is attached by the bolts 4b.
  • the claws 5c are respectively inserted into and secured to the mounting holes 11b. If the bracket 7 is fastened to the bolts 4b by the nuts 6 and the other end of the bracket 7 is fixed to a frame (not shown), then the air bag device 1 can be connected with the instrument panel 8 and can be then mounted in the automobile together with the instrument panel 8. Preselected meters and other similar parts can be installed in the automobile when the instrument panel 8 is mounted into the automobile.
  • Fig. 5 shows a sectional view of an air bag cover 10 according to second embodiment of the present invention.
  • the air bag cover 10 of the second embodiment is different from that of the first embodiment.
  • the recessed portion 16a of the core member 11 does not extend through to the surface side of the core member 11. Rather, the core member 11 protrudes into the barrier layer 15 and the foaming layer 14.
  • the process for forming the curved portion 16d is exactly the same as that of the first embodiment shown in Figs. 4(a) and 4(b).
  • the recess 16 is formed by a working hone 22 of a supersonic welder in the barrier layer 15 before molding the core member.
  • the decorative sheets 12 and 9b which have been molded into a given shape as a whole, are set into a mold for injection molding the base member 9a of the instrument panel 9. After molding the base member 9a, the molded assembly is set into a mold for injection molding the core member 11 of the air bag cover 10, and the core member 11 is then injection molded. It may be assumed that since the recess portion 16b is provided in the barrier layer 15, that the foam layer 14 and outer layer 13 can be damaged due to heat and injection pressure generated when the core member 11 is injection molded. However, since recess 16b is formed with a narrow width (in the range of 0.1 - 0.5 mm), the foaming layer 14 and outer layer 13 cannot be damaged to such a degree that has an ill effect on the outer surface of the decorative sheet 12.
  • the recessed portion 16a is formed by a projecting portion previously provided in the mold surface of the mold for the core member 11.
  • the projecting portion forms the recessed portion 16a and pushes the core member 11 into the recess 16b, as shown in Fig. 5.
  • the tension tests show that the structure of the air bag cover according to the present embodiment is able to reduce the breaking load even if the thin portion 16e of the outer layer 13 is increased.
  • the air bag cover according to the present embodiment can be broken without lowering the breaking extension thereof so greatly and is not embrittled even at a low temperature of -30°C. Therefore, it can be understood that, even if the outer layer 13 is simply connected to the foaming layer 14 by thermal fusion or the like, the outer layer 13 can be prevented from being projected when the air bag cover is broken at low temperatures.
  • the breaking load can be reduced without lowering the productivity of the air bag cover (that is, without any need to reduce the thickness of the outer layer 13 which would increase the rate of occurrence of defective products and would make the thickness control strict). Also, by means of simple connection means such as thermal fusion or the like, the outer layer 13 can be prevented from being projected when it is broken at low temperatures.
  • breakable portion 16 to be provided in the outer layer 13 there is shown a structure in which the thin portion 16e is formed in the curved portion 16d.
  • this is not limiting but, as in an air bag cover 10 shown in Fig. 7, an alternative breakable portion 16 of the outer layer 13 can be formed by pin holes or slits 16f.
  • the breakable portion 16 can be manufactured in the following manner. As shown in Fig. 8(a), after the decorative sheets 12 and 9b are formed by vacuum molding into a given shape, a large number of pins or cutters 24 are inserted into the decorative sheets 12 and 9b at their respective positions to thereby form the pin holes or slits 16f intermittently. Thereafter, the decorative sheets 12 and 9a are set into a mold for injection molding the base member 9a of the instrument panel 9, and the base member 9a is then molded. As shown in Fig. 8(a), the molded assembly is then set into a mold for injection molding the core member 11, and the core member 11 is then injection molded. Next, as shown in Fig.
  • the cut portion 16b and the recessed portion 16a are formed in the core member 11 and barrier layer 15 continuously or intermittently along the breakable portion 16, so that the breakable portion 16 can be produced.
  • the air bag cover 10 of this embodiment can also provide similar operation and effects to those that are provided by the previous embodiments.
  • a cut portion 16b is formed in the barrier layer 15, and a recessed portion 16a is formed in the core member 11 by the mold surface of the core member injection mold when the core member 11 is injection molded or by a working jig after the core member 11 is injection molded to thereby produce the breakable portion 16.
  • the air bag cover 10 of this embodiment also provides similar operation and effects to those that are provided by the previous embodiments.
  • the pin holes or slits 16f are formed in such a manner that they penetrate the air bag covers up to the portion thereof corresponding to the recessed portion 16a formed in the foaming layer 14.
  • the invention is not limited to this but, like an air bag cover 10 according to a fifth embodiment shown in Fig. 10, the pin holes or slits 16c may be formed in such a manner that they penetrate to the middle portion of the foaming layer 14. Since the foaming layer 14 itself is easy to break, there is no possibility that the presence or absence of the pin holes or slits 16f in the forming layer 14 has an influence on the breakage of the decorative sheet 12.
  • Fig. 11 shows an air bag cover 10 according to a sixth embodiment of the present invention.
  • a recessed portion 16a is formed in the core member 11.
  • a fixed portion 16g is formed by extending and fixing the barrier layer 15 to the outer layer 13 by force.
  • the barrier layer 15 is reduced in thickness to provide a thin portion 15a.
  • the thickness of the thin portion 15a is approximately 0.1 to 0.3 mm. If the thickness of the thin portion 15a is less than 0.1 mm, then there is produced a fear that the thin portion 15a can be broken when it is formed. On the other hand, if the thickness is more than 0.3 mm, then the breaking strength of the thin portion 15a becomes large, which in turn lowers the developing property of the cover 10.
  • the method of manufacturing the present embodiment is as follows. As shown in Fig. 12, the decorative sheet 12 including the main body decorative sheet 9b is first vacuum formed into a given shape which can be embedded in the instrument panel 8 and, thereafter, as shown in Fig. 12(a), a working blade C1 of a supersonic welder is pressed against the decorative sheet 12 from the back side thereof thereby forming the fixed portion 16g. In this operation, in order to prevent the barrier layer 15 from being fused and cut away, the working blade C1 is pressed against the barrier layer 15 with a pressure on the order of 200 KPa and at a slow lowering speed on the order of 50 mm/min.
  • the barrier layer 15 can be heated and softened and the foaming layer 14 is dissipated thereby providing the thin portion 15a in the barrier layer 15, and the thin portion 15a is welded to the outer layer 13. The welded portion is then cooled in this condition, and the fixed portion 16g is easily formed.
  • the decorative sheets 12 and 9b which are respectively formed in their given shapes and also include the above-formed fixed portion 16g, are set in a mold which are used to injection mold the base member 9a of the instrument panel main body 9, and the base member 9a is then molded.
  • the decorative sheets 12 and 9b are set in an injection mold for molding the core member 11 of the air bag cover 10 and, as shown in Fig. 12(b), the core member 11 is then molded.
  • the recessed portion 16a is formed by a working blade C2 of a supersonic welder and mounting holes 11b are formed in the bracket 11a.
  • the bracket 11a to be connected to the case 5 of the air bag device 1 is provided in the core member 11.
  • this feature is not limiting.
  • the air bag cover 10 is located above the air bag 2, like an air bag cover 10 shown in Fig. 13, the bracket to be connected with the case 5 can be omitted.
  • the air bag cover according to the first and second embodiments, even if the curved portion 16d is not provided in the outer layer 13, in view of the fact that the barrier layer 15 is higher in tensile strength than the outer layer 13, if the cut portion 16b is spread out in such a manner that the barrier layer 15 can be broken, then the outer layer 13 can be broken smoothly as the barrier layer 15 is broken. Of course, if the curved portion 16d is provided in the outer layer 13 as well, then the outer layer 13 can be broken more smoothly.
  • the core member 11 disposed on the back side of the air bag cover is made of thermoplastic elastomer by injection molding which can be thermally fused to the barrier layer 15. That is, the core member 11 can be manufactured easily without using an adhesive.
  • the air bag cover 10 according to the invention can provide not only a remarkable design effect but also an excellent touch.
  • the air bag cover 10 can be manufactured easily and, when the air bag 2 is expanded, the air bag cover 10 can be broken smoothly so that the air bag 2 can be deployed.
  • the foaming layer 14 is made of foaming polypropylene
  • the base member 9a is made of polypropylene containing filler
  • an air bag cover which includes a decorative sheet having a two layer structure rather than a three-layer structure.
  • the decorative sheet 12 does not include a foaming layer and only includes the outer layer 13 made of olefin thermoplastic elastomer and the barrier layer 15 made of olefin thermoplastic elastomer or styrene thermoplastic elastomer.
  • the outer layer 13 and barrier layer 15 are thermally fused to each other.
  • the invention is not limited to use in an instrument panel.
  • the invention can also be applied to the pads of car interior parts such as a door trim, a seat back, a steering wheel and the like which are used to cover the air bag of the air bag device.
  • the air bag cover may be made of polypropylene system material and the main bodies of the car interior parts such as the instrument panel 9 and the like except for the air bag cover portion thereof may be made of polypropylene containing filler or the like, so that they can be recycled.

Claims (22)

  1. Eine Airbag-Abdeckung zur Abdeckung eines Airbags, die ein Kernelement (11) und eine Dekorlage (12) auf dem Kernelement umfasst, wobei die Dekorlage mindestens eine äußere Schicht (13) und eine Barriereschicht (15) aufweist, wobei das Kernelement (11) an die Barriereschicht (15) gebunden ist, und wobei eine erste Ausnehmung (16a, 16b) durch das Kernelement (11) definiert ist und die Barriereschicht (15) einen zerreißbaren Abschnitt bereitstellt, der bei einer Ausdehnung des Airbags zerrissen werden kann,
    dadurch gekennzeichnet, dass die Barriereschicht (15) aus einem thermoplastischen Elastomer hergestellt ist, thermisch mit dem Kernelement (11) verschmolzen ist und eine höhere Zugfestigkeit aufweist als die äußere Schicht (13).
  2. Airbag-Abdeckung nach Anspruch 1, dadurch gekennzeichnet, dass die Barriereschicht (15) aus einem von einem thermoplastischen Olefin-Elastomer und einem thermoplastischen Styrol-Elastomer hergestellt ist und dass das Kernelement (11) aus einem von einem thermoplastischen Olefin-Elastomer, einem thermoplastischen Styrol-Elastomer und Polypropylen hergestellt ist.
  3. Airbag-Abdeckung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein ausgenommener Abschnitt (16a) in dem Kernelement (11) und ein Schnittabschnitt (16b) in der Barriereschicht (15) derart ausgebildet sind, dass das Kernelement (11) und die Barriereschicht (15) die erste Ausnehmung (16a, 16b) definieren.
  4. Airbag-Abdeckung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass eine erste Ausnehmung (16a, 16b) innerhalb der Barriereschicht (15) ausgebildet ist, wobei die Ausnehmung von dem Kernelement (11) durchdrungen wird, das mit einem ausgenommenen Abschnitt (16a) ausgebildet ist.
  5. Airbag-Abdeckung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass in der äußeren Schicht (13) eine zweite Ausnehmung (16) ausgebildet ist.
  6. Airbag-Abdeckung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass eine Mehrzahl von kleinen Löchern oder Schlitzen (16f) durch die äußere Schicht (13) in einem Abschnitt der äußeren Schicht hindurchtritt, welcher der ersten Ausnehmung (16a, 16b) gegenüberliegt.
  7. Airbag-Abdeckung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die äußere Schicht (13) aus einem von einem thermoplastischen Olefin-Elastomer und einem thermoplastischen Styrol-Elastomer hergestellt ist.
  8. Airbag-Abdeckung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Dekorschicht (12) ferner eine Schaumschicht (14) umfasst, die zwischen der äußeren Schicht (13) und der Barriereschicht (15) angeordnet ist.
  9. Airbag-Abdeckung nach Anspruch 5 und 8, dadurch gekennzeichnet, dass die zweite Ausnehmung durch einen gekrümmten Abschnitt definiert ist, der einen im Wesentlichen V-förmigen Abschnitt aufweist, der sich in die Schaumschicht (14) erstreckt.
  10. Airbag-Abdeckung nach Anspruch 6 und 8, dadurch gekennzeichnet, dass die Mehrzahl von kleinen Löchern oder Schlitzen (16f) die Schaumschicht durchdringen und dass sich die erste Ausnehmung (16a, 16b) in die Schaumschicht (14) erstreckt.
  11. Airbag-Abdeckung nach Anspruch 8, dadurch gekennzeichnet, dass die erste Ausnehmung (16a, 16b) durch Zusammendrücken der Barriereschicht (15) und der Schaumschicht (14) definiert ist, so dass die Barriereschicht (15) zu der äußeren Schicht (13) erweitert und an dieser fixiert wird.
  12. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 1, umfassend die Schritte:
    Bereitstellen einer Dekorlage (12) mit mindestens einer äußeren Schicht (13) und einer Barriereschicht (15),
    Erhitzen der Dekorlage,
    Vakuumformen der erhitzten Dekorlage zu einer gegebenen Form, so dass eine zweite Ausnehmung (16) in der äußeren Schicht ausgebildet wird,
    Anordnen eines Kernelements (11) auf der Barriereschicht (15) der Dekorlage, und
    Ausbilden einer ersten Ausnehmung (16a, 16b) in dem Kernelement und der Barriereschicht gegenüber der in der äußeren Schicht ausgebildeten zweiten Ausnehmung.
  13. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 12, das ferner den Schritt des Anordnens einer Schaumschicht (14) zwischen der äußeren Schicht (13) und der Barriereschicht (15) umfasst.
  14. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 12 oder 13, bei dem das Kernelement (11) durch Spritzgießen auf einer Rückseite der Barriereschicht (15) angeordnet wird.
  15. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 12, bei dem die erste Ausnehmung (16a, 16b) durch einen Arbeitskegel (22) eines Ultraschall-Schweißgeräts ausgebildet wird.
  16. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 12, bei dem die erhitzte Dekorlage (12) auf einem Vakuumformwerkzeug angeordnet wird, das einen Vorsprung (21b) auf einer Formoberfläche aufweist, wobei der Vorsprung die äußere Schicht (13) zur Ausbildung der Ausnehmung drückt und erweitert.
  17. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 15, bei dem die erste Ausnehmung (16a, 16b) nach dem Anordnen des Kernelements (11) auf der Dekorlage (12) ausgebildet wird.
  18. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 15, bei dem ein Abschnitt (16b) der ersten Ausnehmung (16a, 16b) in der Barriereschicht (15) vor dem Anordnen des Kernelements (11) auf der Dekorlage (12) ausgebildet wird, und bei dem der restliche Abschnitt (16a) der ersten Ausnehmung (16a, 16b) in dem Kernelement nach dem Anordnen des Kernelements auf der Dekorlage ausgebildet wird.
  19. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 1, umfassend die Schritte:
    Ausbilden einer Dekorlage (12) mit einer äußeren Schicht (13), einer Schaumschicht (14), die auf einer Rückseite der äußeren Schicht angeordnet ist, und einer Barriereschicht (15), die auf einer Rückseite der Schaumschicht angeordnet ist,
    Erhitzen der Dekorlage,
    Formen der erhitzten Dekorlage zu einer gegebenen Form,
    Ausbilden einer Mehrzahl von kleinen Löchern oder Schlitzen (16f) in der Dekorlage,
    Anordnen eines Kernelements (11) auf einer Rückseite der Barriereschicht durch Spritzgießen, und
    Ausbilden einer ersten Ausnehmung (16a, 16b) in dem Kernelement und in der Barriereschicht gegenüber den kleinen Löchern oder Schlitzen.
  20. Verfahren zur Herstellung einer Airbag-Abdeckung nach Anspruch 1, umfassend die Schritte:
    Ausbilden einer Dekorlage (12) mit einer äußeren Schicht, einer Schaumschicht (14), die auf der Rückseite der äußeren Schicht angeordnet ist, und einer Barriereschicht (15), die auf einer Rückseite der Schaumschicht angeordnet ist,
    Erhitzen der Dekorlage,
    Formen der erhitzten Dekorlage zu einer gegebenen Form,
    Schweißen der Barriereschicht (15) an die äußere Schicht (13) durch Erhitzen und Pressen der äußeren Schicht (13) von der Rückseite der Dekorlage zur Bildung eines feststehenden Abschnitts (16g) in der äußeren Schicht,
    Anordnen eines Kernelements (11) auf der Rückseite der inneren Schicht (15) durch Spritzgießen, und
    Ausbilden eines ausgenommenen Abschnitts (16a) in dem Kernelement gegenüber dem feststehenden Abschnitt.
  21. Airbag-Abdeckung nach Anspruch 1, dadurch gekennzeichnet, dass die erste Ausnehmung (16a, 16b) kontinuierlich entlang eines Abschnitts des Kernelements (11) ausgebildet ist, der durch die Ausdehnung des Airbags zerrissen werden soll.
  22. Airbag-Abdeckung nach Anspruch 1, dadurch gekennzeichnet, dass die erste Ausnehmung (16a, 16b) diskontinuierlich entlang eines Abschnitts des Kernelements (11) ausgebildet ist, der durch die Ausdehnung des Airbags zerrissen werden soll.
EP96109990A 1995-06-21 1996-06-20 Airbagabdeckung und Verfahren zu deren Herstellung Expired - Lifetime EP0749872B1 (de)

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
JP7154884A JPH092180A (ja) 1995-06-21 1995-06-21 エアバッグカバー
JP15491195 1995-06-21
JP15488495 1995-06-21
JP154884/95 1995-06-21
JP154911/95 1995-06-21
JP7154897A JPH092181A (ja) 1995-06-21 1995-06-21 エアバッグカバー
JP15491195A JP3304693B2 (ja) 1995-06-21 1995-06-21 エアバッグカバーの製造方法
JP154897/95 1995-06-21
JP15489795 1995-06-21
JP194970/95 1995-07-31
JP19497095 1995-07-31
JP19497095A JP3254973B2 (ja) 1995-07-31 1995-07-31 エアバッグカバー
JP205657/95 1995-08-11
JP20565795A JP3227638B2 (ja) 1995-08-11 1995-08-11 エアバッグカバー
JP20565795 1995-08-11

Publications (3)

Publication Number Publication Date
EP0749872A2 EP0749872A2 (de) 1996-12-27
EP0749872A3 EP0749872A3 (de) 2000-03-15
EP0749872B1 true EP0749872B1 (de) 2003-04-23

Family

ID=27528069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96109990A Expired - Lifetime EP0749872B1 (de) 1995-06-21 1996-06-20 Airbagabdeckung und Verfahren zu deren Herstellung

Country Status (3)

Country Link
US (2) US5698283A (de)
EP (1) EP0749872B1 (de)
DE (1) DE69627578T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103108704A (zh) * 2010-06-30 2013-05-15 大日本印刷株式会社 装饰片的制造方法、装饰片、以及使用该装饰片得到的装饰成形品
DE102022210167A1 (de) 2022-09-27 2024-03-28 Psa Automobiles S.A. Verfahren zum Fertigen einer Karosseriebaugruppe

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0748722B1 (de) 1995-06-16 2001-09-12 Toyoda Gosei Co., Ltd. Innenverkleidungsteil für ein Kraftfahrzeug mit einem Luftsack und Herstellungsverfahren dafür
JP3728778B2 (ja) * 1995-09-22 2005-12-21 豊田合成株式会社 エアバッグカバー
JPH09156445A (ja) * 1995-12-12 1997-06-17 Toyoda Gosei Co Ltd エアバッグカバー
DE19546585A1 (de) * 1995-12-13 1997-06-19 Trw Repa Gmbh Gassack-Abdeckung für ein Fahrzeuginsassen-Rückhaltesystem sowie Verfahren zu deren Herstellung
US5765864A (en) * 1996-02-26 1998-06-16 Winget; Larry J. Unitary composite steering wheel and air bag cover assembly and method of making same
JPH1044188A (ja) * 1996-08-06 1998-02-17 Takata Kk 樹脂製エアバッグの製造方法及び樹脂製エアバッグ
JP3944245B2 (ja) * 1997-01-20 2007-07-11 アリベル・インデュストリ 通路を生成できるよう設計されたゾーンを含む完成部品を生産する方法、およびそれによって生産される完成部品およびアセンブリ
US6065771A (en) * 1997-02-19 2000-05-23 Toyo Tire & Rubber Co., Ltd. Instrument panel for air bag
JP3419240B2 (ja) * 1997-03-21 2003-06-23 豊田合成株式会社 エアバッグ用パッドとその製造方法
CA2256497C (en) 1997-03-26 2003-07-01 Toyota Jidosha Kabushiki Kaisha Interior member having an airbag door section for use in vehicles, and its molding method
DE19718931C1 (de) * 1997-04-28 1998-08-06 Petri Ag Airbagabdeckkappe aus Träger- und Deckschicht unterschiedlicher Elastizität
US5908203A (en) * 1997-06-18 1999-06-01 Phillips Plastics Corporation Air bag cover
DE29720138U1 (de) 1997-11-13 1998-03-19 Trw Automotive Safety Sys Gmbh Vorrichtung zum Abdecken eines Airbags
JP3298503B2 (ja) * 1998-04-28 2002-07-02 トヨタ自動車株式会社 エアバッグドア部を有する車両用内装部材
US6076851A (en) * 1998-05-01 2000-06-20 Lear Corporation Airbag surround for seamless instrument panel
BR9910630A (pt) * 1998-05-21 2001-01-30 Magna Interior Sys Inc Processo e aparelho de fabricação para formar integralmente uma costura rasgável dentro de um material de cobertura de guarnição de assento e conjunto de assento autimotivo tendo um colchão inflável integrado
JP2000016221A (ja) * 1998-07-03 2000-01-18 Toyoda Gosei Co Ltd インストルメントパネルとその製造方法
US6145871A (en) * 1998-07-06 2000-11-14 Lear Automotive Dearborn, Inc. Seamless airbag with a mechanical gas bag attachment
US6168189B1 (en) * 1998-09-14 2001-01-02 Breed Automotive Technology, Inc. Airbag cover
DE19910141A1 (de) * 1999-03-01 2000-09-14 Petri Ag Aufreißlinie in Abdeckungen von Airbageinheiten
US7369048B2 (en) * 1999-03-19 2008-05-06 Fusion Graphics, Inc. RFID systems and graphic image fusion
US7927688B2 (en) 1999-03-19 2011-04-19 Standard Register Company Security information and graphic image fusion
US6544634B1 (en) * 1999-03-19 2003-04-08 Pinnacle Products Group, Ltd. Graphic image fusion
AT406759B (de) * 1999-04-08 2000-08-25 Magna Eybl Gmbh Abdeckung für ein airbag-modul
DE19958865B4 (de) * 1999-12-07 2009-11-12 Peguform Gmbh Luftsackabdeckvorrichtung sowie Einrichtung und Verfahren zur Herstellung einer Luftsackabdeckvorrichtung
JP3807216B2 (ja) * 2000-09-29 2006-08-09 豊田合成株式会社 エアバッグカバー
US6684733B2 (en) * 2000-12-27 2004-02-03 B & I Fender Trims, Inc. Steering wheel accent strip
US6692019B2 (en) * 2001-03-13 2004-02-17 Delphi Technologies, Inc. Method to create invisible air bag deployment panel
US6467801B1 (en) 2001-06-20 2002-10-22 Patent Holding Company Air bag deployment chute and panel assembly
US6669228B2 (en) 2001-07-02 2003-12-30 Delphi Technologies, Inc. Air bag cover of polymeric foam having weakened region
WO2003004310A2 (en) * 2001-07-02 2003-01-16 Delphi Technologies, Inc. Air bag cover of polymeric foam having weakened region
US20050040630A1 (en) * 2001-09-28 2005-02-24 Trw Vehicle Safety Systems Inc. Apparatus with specified relationship between an instrument panel and a deployment door
KR100518344B1 (ko) * 2002-10-18 2005-09-29 현대모비스 주식회사 조수석 에어백 커버 성형용 금형장치
US6942243B2 (en) * 2002-12-23 2005-09-13 Lear Corporation Vehicle instrument panel air bag door assembly
US6921105B2 (en) * 2003-03-04 2005-07-26 Delphi Technologies, Inc. Integrally molded passenger airbag cover
ES2308083T3 (es) * 2003-09-30 2008-12-01 Nihon Plast Co., Ltd. Cubierta para airbag y procedimiento para su fabricacion.
US7093850B2 (en) * 2003-11-14 2006-08-22 Delphi Technologies, Inc. Instrument panel with integral hidden door cover and method of manufacture thereof
US20050104338A1 (en) * 2003-11-19 2005-05-19 Quin Soderquist Applique film airbag cover
DE102004002591B4 (de) * 2004-01-16 2016-03-03 Robert Bosch Gmbh Brandmelder
US7264694B2 (en) * 2004-01-29 2007-09-04 Oil-Tech, Inc. Retort heating apparatus and methods
US20050196594A1 (en) * 2004-03-02 2005-09-08 Illinois Tool Works, Inc. In-mold label composition and process
DE102004038314A1 (de) * 2004-08-05 2006-03-16 Eissmann Gmbh Überzug für die Abdeckung eines Airbags
US20060068193A1 (en) * 2004-09-29 2006-03-30 Lear Corporation Method and apparatus for making a trim panel with a self-skinning blown elastomer component
US7458631B2 (en) 2004-10-19 2008-12-02 International Automotive Components Group North America, Inc. Automotive armrest with soft feel and method of making the same
US7478854B2 (en) * 2004-10-19 2009-01-20 International Automotive Components Group North America, Inc. Automotive handle with soft feel and method of making the same
US20060082109A1 (en) * 2004-10-20 2006-04-20 Hier Michael J Method of making an automotive trim assembly having an integrated airbag door
US7458604B2 (en) * 2004-10-20 2008-12-02 International Automotive Components Group North America, Inc. Automotive trim assembly having an integrated airbag door
US20060097544A1 (en) * 2004-11-09 2006-05-11 Cowelchuk Glenn A Automotive interior trim assembly and method
US20060099395A1 (en) * 2004-11-09 2006-05-11 Cowelchuk Glenn A Automotive interior trim assembly and method
US8221843B2 (en) * 2005-02-15 2012-07-17 Lisa Dräxlmaier GmbH Methods and compositions for coating interior components of motor vehicles and interior components of motor vehicles coated using same
DE102005013477B4 (de) * 2005-03-23 2008-12-04 Lisa Dräxlmaier GmbH Kraftfahrzeugverkleidungsteil mit Schwächungsstellen und Verfahren zu dessen Herstellung
JP4769010B2 (ja) * 2005-04-06 2011-09-07 三光合成株式会社 エアーバッグ装置を備えた自動車用内装カバー
US20060267312A1 (en) * 2005-05-24 2006-11-30 Takata Restraint Systems, Inc. Airbag cover and method for producing airbag cover
US7384061B2 (en) * 2005-07-14 2008-06-10 International Automotive Components Group North America, Inc. Trim panel and a method of manufacture
DE102005034354B4 (de) * 2005-07-22 2014-08-28 Lisa Dräxlmaier GmbH Airbagabdeckung
JP2007062701A (ja) * 2005-09-02 2007-03-15 Takata Corp エアバッグ装置及びその蓋部材
JP4854325B2 (ja) * 2006-02-24 2012-01-18 株式会社イノアックコーポレーション エアバッグドアおよびその製造方法
EP1996434A1 (de) * 2006-03-17 2008-12-03 Johnson Controls Interiors GmbH & Co. KG Scharnierung für eine airbag-abdeckung
DE102007030372A1 (de) * 2007-06-29 2009-01-08 Volkswagen Ag Soft-Cover Seitenairbagmodul mit vliesverstärktem Lehnenschaumteil
US20090102168A1 (en) * 2007-10-23 2009-04-23 Hyun Kim Door of passenger air bag for vehicle
EP2052833B1 (de) * 2007-10-23 2012-01-11 Peguform Gmbh Verfahren und Vorrichtung zur Herstellung eines Formteils mit einer Sollbruchlinie für eine Airbagöffnung
FR2929902B1 (fr) * 2008-04-11 2010-08-13 Faurecia Interieur Ind Procede de fabrication d'une gorge dans un panneau de garniture de vehicule automobile pour delimiter un volet destine a masquer un coussin de securite gonflable
DE102009029711A1 (de) * 2009-06-22 2010-12-23 GM Global Technology Operations, Inc., Detroit Airbaganordnung für ein Fahrzeug
JP5593108B2 (ja) * 2010-03-30 2014-09-17 本田技研工業株式会社 歩行型芝刈機
US10083634B2 (en) 2010-11-15 2018-09-25 Taylor Communications, Inc. In-mold labeled article and method
JP5626580B2 (ja) * 2010-12-15 2014-11-19 トヨタ紡織株式会社 植物性繊維含有ボード部材の製造方法
JP5725170B2 (ja) * 2011-05-24 2015-05-27 トヨタ自動車株式会社 エアバッグドアを一体に有するインストルメントパネル
EP2527208B1 (de) * 2011-05-26 2013-10-23 International Automotive Components Group GmbH Airbag-Abdeckung, insbesondere für Airbags in einem Kraftfahrzeug und Verfahren zu deren Herstellung
US8944460B2 (en) * 2011-06-30 2015-02-03 Ford Global Technologies, Llc Air bag chute topper system
US9465127B2 (en) * 2013-05-07 2016-10-11 Pgs Geophysical As Disposable antifouling covers for geophysical survey equipment
JP2015093555A (ja) * 2013-11-11 2015-05-18 豊田合成株式会社 車両用内装パネル及び車両用エアバッグ装置
DE102014211288B3 (de) * 2014-06-12 2015-06-11 Faurecia Innenraum Systeme Gmbh Verfahren zum Herstellen einer Schwächungsstruktur in einer Dekorlage einer Airbagabdeckung und Dekorlage mit Schwächungsstruktur einer Airbagabdeckung
FR3036671B1 (fr) * 2015-05-28 2017-07-07 Faurecia Interieur Ind Procede de fabrication d'un habillage et habillage correspondant
CN105479764B (zh) * 2015-12-16 2017-07-07 爱卓塑料(上海)有限公司 一种仪表面板的双嵌模生产工艺
CN205930619U (zh) * 2016-07-29 2017-02-08 上海延锋金桥汽车饰件系统有限公司 一种用于汽车的安全气囊门盖板
KR102408193B1 (ko) * 2018-01-24 2022-06-13 현대모비스 주식회사 조수석 에어백 도어
US10703318B2 (en) * 2018-04-16 2020-07-07 Ford Global Technologies, Llc Instrument panel with passenger airbag
WO2020218932A1 (en) * 2019-04-24 2020-10-29 Dragulinescu Ionel Dan Multy-cavity mould for a thermoforming machine used in the process of high-volume, continuous thermoforming of thin-gauge plastic products

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0783980B2 (ja) * 1986-07-10 1995-09-13 日本電信電話株式会社 光コネクタ部の端面加工方法
JPH0717598Y2 (ja) * 1986-07-28 1995-04-26 東洋ゴム工業株式会社 エアバッグ取付構造
DE3700960A1 (de) * 1987-01-15 1988-07-28 Benecke Gmbh J Verfahren zur erzeugung von ziernaehten an im tiefziehverfahren geformten folien sowie vorrichtung zur durchfuehrung des verfahrens
DE3904977C1 (de) * 1989-02-18 1990-01-18 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
US5180187A (en) * 1989-02-18 1993-01-19 Daimler-Benz Ag Cover for an airbag unit and the process for producing it
US5248532A (en) * 1989-12-18 1993-09-28 Takata Corporation Air bag-containing cover
US5395668A (en) * 1990-08-29 1995-03-07 Toyoda Gosei Co., Ltd. Air bag apparatus
JP3029655B2 (ja) * 1990-09-18 2000-04-04 株式会社イノアックコーポレーション 自動車用エアバックドア表皮の製造方法
US5194194A (en) * 1990-09-28 1993-03-16 Toyoda Gosei Co., Ltd. Method for molding soft sheet material
JP2502847B2 (ja) * 1991-07-23 1996-05-29 日本プラスト株式会社 エアバッグカバ―体
US5316822A (en) * 1991-07-23 1994-05-31 Nihon Plast Co., Ltd. Cover for vehicular air bag
JP3181661B2 (ja) * 1992-02-21 2001-07-03 カルソニックカンセイ株式会社 インストルメントパネルとその製造方法
US5335935A (en) * 1992-08-31 1994-08-09 Plastic Mold Technology Incorporated Air bag cover/molded article with integral cover layer of leather
JPH06218811A (ja) * 1993-01-25 1994-08-09 Kansei Corp シート状部材への溝形成方法
GB2276354B (en) * 1993-03-22 1996-01-03 Klippan Autoliv Snc Improvements in or relating to a cover for an air-bag
FR2703012B1 (fr) * 1993-03-24 1995-07-07 Ecia Equip Composants Ind Auto Structure de revêtement d'un élément de structure, notamment pour véhicule automobile, dans lequel est intégré un module à sac gonflable.
DE4417952A1 (de) * 1994-05-21 1995-11-23 Petri Ag Abdeckung für Gassack-Aufprall-Schutzeinrichtungen sowie Verfahren zu ihrer Herstellung
JP3336325B2 (ja) * 1994-11-14 2002-10-21 豊田合成株式会社 表皮層を有する樹脂製品及びその製造方法
US5533748A (en) * 1994-12-01 1996-07-09 Morton International, Inc. Invisible instrument panel or dashboard airbag cover door
US5632914A (en) * 1995-05-24 1997-05-27 Davidson Textron Inc. Motor vehicle air bag cover having a skin with a virtually invisible tear seam formed by miniature holes
EP0748722B1 (de) * 1995-06-16 2001-09-12 Toyoda Gosei Co., Ltd. Innenverkleidungsteil für ein Kraftfahrzeug mit einem Luftsack und Herstellungsverfahren dafür
US5599608A (en) * 1995-06-20 1997-02-04 Green Tokai Co., Ltd. Method of insert molding plastic parts to provide covered edge surfaces and plastic parts made thereby

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103108704A (zh) * 2010-06-30 2013-05-15 大日本印刷株式会社 装饰片的制造方法、装饰片、以及使用该装饰片得到的装饰成形品
DE102022210167A1 (de) 2022-09-27 2024-03-28 Psa Automobiles S.A. Verfahren zum Fertigen einer Karosseriebaugruppe

Also Published As

Publication number Publication date
US5989479A (en) 1999-11-23
DE69627578T2 (de) 2004-02-12
EP0749872A3 (de) 2000-03-15
EP0749872A2 (de) 1996-12-27
US5698283A (en) 1997-12-16
DE69627578D1 (de) 2003-05-28

Similar Documents

Publication Publication Date Title
EP0749872B1 (de) Airbagabdeckung und Verfahren zu deren Herstellung
US5979931A (en) Air bag cover
JP3728778B2 (ja) エアバッグカバー
JP3499265B2 (ja) エアバッグカバーとこのカバー内に目に見えない引裂き継目を製造するための装置
JP4262360B2 (ja) エアバッグ展開開口部を形成するために予備弱体化される自動車用トリムピースを製造する方法
US6440514B1 (en) Instrument panel and method for producing the same
JP3011888B2 (ja) インストルメントパネルのエアバッグドアの構造
US5501890A (en) Invisible tear seam for an air bag deployment opening cover
EP2117800B1 (de) Verfahren zur herstellung eines verkleidungspaneels und verkleidungspaneel
GB2342898A (en) Automotive instrument panel having an air bag cover
EP1685009A1 (de) Vorrichtung und verfahren zur positionierung von verstärkungsmaterial in einer innenverkleidungsplatte
JP3029655B2 (ja) 自動車用エアバックドア表皮の製造方法
US20080315566A1 (en) Instrument panel with integral hidden door cover and method of manufacture thereof
JP3042984B2 (ja) エアバッグドア部を一体に有するインストルメントパネル
JPH06285876A (ja) エアバッグカバー部を有する車両内装部品の製造方法
JPH092180A (ja) エアバッグカバー
JP2000159047A (ja) エアバッグドア用開裂予定部を有する表皮の製造方法
JP2000071926A (ja) エアバッグ装置用内装部材の製造方法
JP3227638B2 (ja) エアバッグカバー
JP3304693B2 (ja) エアバッグカバーの製造方法
JP4046190B2 (ja) 自動車のエアバッグドア及びその製造方法
JP3254973B2 (ja) エアバッグカバー
JP3386926B2 (ja) 自動車のエアバッグドア部の構造およびその製法
JPH0858512A (ja) 車室側部材のエアバッグドア部の構造
JP3042981B2 (ja) エアバッグドア部を一体に有するインストルメントパネルおよびその製法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 20000508

17Q First examination report despatched

Effective date: 20010521

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RTI1 Title (correction)

Free format text: AIR BAG COVER

RTI1 Title (correction)

Free format text: AIR BAG COVER

RTI1 Title (correction)

Free format text: AIR BAG COVER

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RTI1 Title (correction)

Free format text: AIR BAG COVER AND METHOD OF MANUFACTURING THE SAME

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69627578

Country of ref document: DE

Date of ref document: 20030528

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040126

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050608

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050615

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050616

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060620

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070103

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060620

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630